| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Local Chemical Ordering and Its Impact on Mechanical Behaviors, Radiation Damage, and Corrosion
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| Presentation Title |
Configurational analysis of local order in CrFeCoNi to cryogenic temperatures: A Total Scattering Investigation |
| Author(s) |
Benjamin Edward Jolly, Chris Race, Nick Jones, Lewis Owen |
| On-Site Speaker (Planned) |
Benjamin Edward Jolly |
| Abstract Scope |
CrFeCoNi is a single-phase multi-principle element alloy system (MPEA), constituting the basis of the CrFeCoNi-X family of ‘high-entropy alloys’ (HEAs). It has been suggested that, like the compositionally related CrCoNi system, its mechanical properties (including enhanced performance at cryogenic temperatures) may be linked to the presence of atomic short-range order (SRO), though this hypothesis has proven difficult to empirically demonstrate. Following prior studies on the CrCoNi ternary MPEA, the character of SRO in equiatomic CrFeCoNi has been assessed via the neutron total scattering method. Neutron diffraction experiments have been performed to cryogenic temperatures at the ISIS Neutron and Muon Source. A large-box modelling method - Reverse Monte Carlo (RMC) fitting approach of the Pair Distribution Functions (PDF) - has been employed in the determination of local ordering, providing a novel configurational analysis for this system. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Computational Materials Science & Engineering, Characterization |